

<div nz-row style="width: 100%; height:100%;">
  <div nz-col [nzSpan]="12" style="height: 50%">
    <app-chart1></app-chart1>
  </div>
  <div nz-col [nzSpan]="12" style="height: 50%">
    <app-chart2></app-chart2>
  </div>
  <div nz-col [nzSpan]="12" style="height: 50%">
    <app-chart3></app-chart3>
  </div>
  <div nz-col [nzSpan]="12" style="height: 50%">
    <app-chart4></app-chart4>
  </div>
</div>

